An elderly man, apparently angry about dog droppings outside his apartment, is accused of fatally shooting a mother of five children and her fiancé Monday.

Dallas police said 75-year-old Chung Kim shot his neighbor from below her balcony, went upstairs to her apartment and shot her fiancé, who tumbled over a patio railing and fell to the ground.

Kim then went back outside, stood over the fiancé and shot him again, police said.

“I never expected this,” said Michael Issa, who lives next door to Kim. “I went outside for a cigarette, and I heard shots. Someone yelled. ‘Look up!’ And I looked up and I saw feet hanging over the balcony. … I just feel bad for the kids; they have no more parents.”

Michelle Jackson and Jamie Stafford, both 31, had lived above Kim for about two years at Sable Ridge Apartments on Abrams Road, near Northwest Highway in northeast Dallas. Tensions escalated after the couple bought a dog named Selena about nine months ago, neighbors said.

Kim had been in an ongoing dispute with his upstairs neighbors over the couple dumping the dog’s feces on his patio and the dog urinating on the couple’s balcony, which is above his patio, according to police and neighbors.

Kim, who lived with his wife, also had complained to the couple about noise from the dog and children, repeatedly banging on the ceiling and demanding quiet, neighbors said.

The tensions came to a head early Monday, during another argument about the dog waste.

About 8 a.m., Jackson was on her balcony while Kim was apparently below her, outside his apartment.

Police said Kim pulled out a handgun and shot Jackson multiple times before going upstairs and entering the couple’s apartment.

From inside the apartment, Kim shot at Stafford, who was trying to escape by climbing over the patio railing. Stafford fell to the ground, and Kim went downstairs and shot him again, police said.

Witnesses heard about eight shots and said both victims had been shot in the head.

After Kim shot the couple, he drove away, police said. Witnesses described Kim and his vehicle to authorities, and officers arrested him nearby at Abrams Road and Larmanda Street.

He was being treated late Monday at Parkland Memorial Hospital for a medical condition that authorities said was not related to the incident. He faces a capital murder charge.

Jackson gave birth to her fifth child in December. The girl was her first child with Stafford, whom she was engaged to marry, co-workers said. She had four elementary-age children from a previous marriage who were at school when the shootings happened, neighbors said.

Jackson volunteered about 30 hours a week for AmeriCorps VISTA, a national program that places volunteers in local organizations to help combat poverty. She served at the local nonprofit Dallas Community Lighthouse, where she tutored disadvantaged children in reading, math and language arts. Through the AmeriCorps program, Jackson received a modest stipend and money toward college.

She was pursuing a degree in education, said Keven Vicknair, director of the local AmeriCorps community service program.

“She was really happy she was going back to school,” Vicknair said. “It’s insane that this happened to her [when] everything was looking up. She was great.”

Diana Baker, executive director for Dallas Community Lighthouse, remembered Jackson as a strong and giving person and a great mother.

“I’m just totally shocked,” she said. “I really feel so bad for those five kids.”

The children are staying with relatives, according to Child Protective Services. The dog will be adopted by a neighbor in the complex.

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